de5eb6562e
BmpHeader.ReadDims reads texture dims from the pre-converted BMP header (VM- thread-safe, no pixel decode) — the data source for GetTextureSize. `Age.Cli gfx <SCENE>` runs a scene and dumps set-texture/get-texture-size/draw-texture in order with resolved file + computed geometry, mirroring the `audio` diagnostic. Confirms 0x208 now yields real dims (800x600/800x800/800x227) and sane UI geometry; surfaces the first-load anchor edge (unseeded state, Phase B). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
34 lines
1.0 KiB
C#
34 lines
1.0 KiB
C#
using System.IO;
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using Age.Engine.Sys4;
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using Xunit;
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public class BmpHeaderTests
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{
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[Fact]
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public void ReadDimsReadsWidthAndHeightFromBmpHeader()
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{
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// Minimal 54-byte BMP header (BITMAPFILEHEADER 14 + BITMAPINFOHEADER 40); width=4, height=3.
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var b = new byte[54];
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b[0] = (byte)'B'; b[1] = (byte)'M';
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System.BitConverter.GetBytes(40).CopyTo(b, 14); // header size
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System.BitConverter.GetBytes(4).CopyTo(b, 18); // width
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System.BitConverter.GetBytes(3).CopyTo(b, 22); // height
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var tmp = Path.Combine(Path.GetTempPath(), "agehdr_test.bmp");
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File.WriteAllBytes(tmp, b);
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try
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{
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var (w, h) = BmpHeader.ReadDims(tmp);
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Assert.Equal(4, w);
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Assert.Equal(3, h);
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}
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finally { File.Delete(tmp); }
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}
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[Fact]
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public void ReadDimsReturnsZeroForMissingFile()
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{
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var (w, h) = BmpHeader.ReadDims(Path.Combine(Path.GetTempPath(), "does_not_exist_agehdr.bmp"));
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Assert.Equal((0, 0), (w, h));
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}
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}
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